Ex-1-Prime and Composite Numbers-2-Grade6 Page-1
Write true or false. Show your work if it is composite. Write all rules.
Statement
2 is an odd number.
27 is a prime number.
23 is composite number.
39 is prime number.
67 is prime number.
81 is composite number.
206458 is even number.
True/False
Ex-1-Prime and Composite Numbers-2-Grade6 Page-2
All odd numbers are prime.
All even numbers are composite.
9 is odd and composite number.
63 is composite and divisible 3 and odd number.
108 is even number and divisible by 3
513 is multiple of three and prime number.
1905 is divisible by 5 and composite number.
Find out all list of all composite, prime, odd and even numbers between 25 and 75.
Composite:Prime:Even:Odd:-
Ex-1-Prime and Composite Numbers-2-Grade6 Page-3
Find out that number is prime or composite. (Show all work and communicate)
11
121
81
56
36
49
52
105
39
63
42
132
111
144
108
126
164
189
149
190
Find out that following numbers are divisible by 2,3,4,5,9,10, or none. Write rule for each
rule in full sentence. (If number is divisible by more than 1 number then write all the
rules are reasons)
Ex-1-Prime and Composite Numbers-2-Grade6 Page-4
99
Ex-1-Prime and Composite Numbers-2-Grade6 Page-5
120
234
117
294
345
615
Ex-1-Prime and Composite Numbers-2-Grade6 Page-6
114
405
270
1290
783
1005
Ex-1-Prime and Composite Numbers-2-Grade6 Page-7
189
1325
165342
Find out that number is “Prime” or “composite” Show your work.
47
49
45
39
Ex-1-Prime and Composite Numbers-2-Grade6 Page-8
807
21
78
108
Answer the following questions(Communication is very important)(Meaning of “and” is number must be
divisible by all given numbers)(Meaning of “or” is number must be divisible by one of given number)
Find out five numbers with Find out 5 numbers with 4
4 digits and has 2 as factor. digits and has 3 as factors.
Find out two numbers with
3 digits and has 2 as factor.
Ex-1-Prime and Composite Numbers-2-Grade6 Page-9
Find out numbers between
75 and 95 which are
divisible by 3.
Find out numbers between
100 and 150 which are
divisible by 5.
Find out numbers between
50 and 75 which are
divisible 4.
Find out numbers between
15 and 75 which are
divisible 2 and 3.
Find out numbers between
35 and 55 which are
divisible by 2 and 4.
Find out numbers between
100 and 150 which are
divisible by 5 and 4.
Find out numbers between
10 and 50 which are
divisible by 2 and 3 and 4.
Find out numbers between
45 and 75 which are
divisible by 3 and 4.
Find out numbers between
100 and 125 which are
divisible 2 or 3